include/sound/sdca.h

   1 /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
   2 /*
   3  * The MIPI SDCA specification is available for public downloads at
   4  * https://www.mipi.org/mipi-sdca-v1-0-download
   5  *
   6  * Copyright(c) 2024 Intel Corporation
   7  */
   8
   9 #ifndef __SDCA_H__
  10 #define __SDCA_H__
  11
  12 struct sdw_slave;
  13
  14 #define SDCA_MAX_FUNCTION_COUNT 8
  15
  16 /**
  17  * sdca_device_desc - short descriptor for an SDCA Function
  18  * @adr: ACPI address (used for SDCA register access)
  19  * @type: Function topology type
  20  * @name: human-readable string
  21  */
  22 struct sdca_function_desc {
  23         u64 adr;
  24         u32 type;
  25         const char *name;
  26 };
  27
  28 /**
  29  * sdca_device_data - structure containing all SDCA related information
  30  * @sdca_interface_revision: value read from _DSD property, mainly to check
  31  * for changes between silicon versions
  32  * @num_functions: total number of supported SDCA functions. Invalid/unsupported
  33  * functions will be skipped.
  34  * @sdca_func: array of function descriptors
  35  */
  36 struct sdca_device_data {
  37         u32 interface_revision;
  38         int num_functions;
  39         struct sdca_function_desc sdca_func[SDCA_MAX_FUNCTION_COUNT];
  40 };
  41
  42 enum sdca_quirk {
  43         SDCA_QUIRKS_RT712_VB,
  44 };
  45
  46 #if IS_ENABLED(CONFIG_ACPI) && IS_ENABLED(CONFIG_SND_SOC_SDCA)
  47
  48 void sdca_lookup_functions(struct sdw_slave *slave);
  49 void sdca_lookup_interface_revision(struct sdw_slave *slave);
  50 bool sdca_device_quirk_match(struct sdw_slave *slave, enum sdca_quirk quirk);
  51
  52 #else
  53
  54 static inline void sdca_lookup_functions(struct sdw_slave *slave) {}
  55 static inline void sdca_lookup_interface_revision(struct sdw_slave *slave) {}
  56 static inline bool sdca_device_quirk_match(struct sdw_slave *slave, enum sdca_quirk quirk)
  57 {
  58         return false;
  59 }
  60 #endif
  61
  62 #endif